1. Collective invention
2. Arcand , Jean-Louis , and Marcel Fafchamps . 2006 . “ Matching in community-based organizations .” Working Paper No. 2006/26, CERDI
3. Artur , Luis , Paul Habinck , and Boon , Andrè . 2002 . “ I am squeezed: Rural livelihood in Morrumbala District, Mozambique .” PhD diss., Universidade Eduardo Mondlane, Maputo. http://196.3.97.216/handle/10857/3064
4. Centralized sanctioning and legitimate authority promote cooperation in humans
5. Bandiera , Oriana , and Imran Rasul . 2002 . “ Social Networks and Technology Adoption in Northern Mozambique .” Discussion Paper No. 3341 . London : Centre for Economic Policy Research .